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author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2019-07-26 20:30:57 +0200 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2019-08-01 20:51:21 +0200 |
commit | f5c2f0215e36d76fbb9605283dd7535af09f5770 (patch) | |
tree | 68ba2600596eb02e2f69f27b365e615417df73c6 /arch/m68k/mvme147 | |
parent | 902a9f9c509053161e987778dc5836d2628f53b7 (diff) | |
download | linux-f5c2f0215e36d76fbb9605283dd7535af09f5770.tar.gz |
hrtimer: Move unmarked hrtimers to soft interrupt expiry on RT
On PREEMPT_RT not all hrtimers can be expired in hard interrupt context even if that is perfectly fine on a PREEMPT_RT=n kernel, e.g. because they take regular spinlocks. Also for latency reasons PREEMPT_RT tries to defer most hrtimers' expiry into softirq context. hrtimers marked with HRTIMER_MODE_HARD must be kept in hard interrupt context expiry mode. Add the required logic. No functional change for PREEMPT_RT=n kernels. [ tglx: Split out of a larger combo patch. Added changelog ] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20190726185753.551967692@linutronix.de
Diffstat (limited to 'arch/m68k/mvme147')
0 files changed, 0 insertions, 0 deletions